Fuel-oil burner



Mar. 6, .1923.

F. HARDINGE FUEL OIL BURNER 2 sheets-sheet 1 Filed Feb. 10, 1921 Mar. 6, 1923.

F. HARDINGE FUEL OIL BURNER 2 sheets-sheet 2 Filed Feb. 10, 1921 sists in providing supporting means of this Patent ar. 6,1923.

' amt FRANKLIN HARDINGE, or cnIcAeo,'ILLINoIs, ASSIGNOR T HARnINGE snow I INCORPORATED, or cmcaco, ILLI'NoIs, A cosroRA'rIo or ILLINoIs.

FUEL-01 URNER.

Application filed February 10, 1921. Serial No. 443,828.

To all whom it may concern:

Be itknown that I, FRANKLIN HARDINGE, a citizenof the United States, and resident of Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement-in F uel-Oil Burners, of which the following is afull, clear, concise, and exact description, reference being had to the accompanying drawings, formingla part of this specification.

y invention relates to improvements in fuel oil burners, and is especially concerned with the provision of means for supporting the bed of the firebox of fu rnaces using oil burners of the kind described and-claimed in my co-pending application, Serial No. 380,794, filed May twelfth 1920, in which a rotary spindle is utilized for rotating an atomizing'nozzle operating in the firebox,

The primary object of the invention conkind, of such construction as to permit of its use in two ways. When used in one way, the firebox bed is supported from and above the bed plate of the machine. If, as occasionally occurs, the mountingin this way of the firebox bed upon the bed plate causes the setting up of sympathetic vibrations of the firebox bed, due to vibration of the various parts of the machine, and thuscreates certain objectionable humming sounds, the supporting means may be arranged in the other way. a

These, and other objects of the present invention, will appear from the following detailed description taken in connection with the accompanying drawings, wherein Figure 1 is a plan of that portion of an oil burner which lies beneath the furnace fire box, certain of the parts comprising the firebox bed' being broken away in order more clearly to reveal parts therebenea-th;

Figure 2 is a side View, partly in section and partly in elevation, of the mechanism as seen in Figure 1 Figure 3 is an end view of thesame, a portion of the brace for the supporting struts being broken away, and the atomizing nozzle therebehind being shown in section.

In this View, the firebox bed is illustrated as supported entirely from the oil burner bed plate, by means. of the supporting struts; and

Figure 4 is a view similar to Figure 3,

the firebox bed in this view being illustrated as supported independently of the'bed plate of theoil burner, to prevent the creation of the objectionable sounds referred to.

The same reference numerals are used in referring to the same parts throughout'the views. r

Referring to the drawings, I- have illustrated only so much of the oil burner itself as is essential to a clear understanding of the present invention. The oil burner bedplate 5 is provided with two rails 5 and 5, the latter of which issubstantially V-shaped. Mounted on these rails is a base plate 6, on the inner end of which, beneath the firebox 8, is a housing 9. The housing 9 carries the spindle 10, on which is mounted the atomizing nozzle 11, arranged to operate inthe firebox 8. The spindle 10 is driven by means of suitable gearing, located in the housing 9, which in turn is driven by the drive shaft 12. The shaft 12 has a drivingconnection with an electric motor or other suitable machine,

mounted preferably upon the base plate 6,

outside of the furnace.

A ring 13 surrounds the spindle 10 beneath the atomizing nozzle 11, and is concentric therewith. This ring has an upwardly extending annular flange 14:, pro-,

vided with an annular shoulder 15 adjacent its upper edge. The shoulder 15 is accurately machined, and is arranged in concentric relation with the nozzle 11. A. flat ring 16 rests upon theshoulder 15 and restricts the flow of air upwardly past the air -vanes 17, which project radially from the nozzle 11 beneath the knife edge 18 provided on the nozzle.

Fuel oil under pressure is forced up through the stationary feed pipe 19, on the top of which is carried the cap 20 ofrefractory material. The oil passes out of the several openings 21into theannular cup 22, which being rotated at a high velocity with the nozzle 11, subjects the fuel to centrifugal action, for the purpose described in my co-pending application filed May 12, 1920, Serial No. 380,794. The air delivered by the fan vanes 17 is mixed with the fuel discharged from the knife edge -8'to form a combustible mixture which, upon being ignited, produces an incandescent white flame having intense heat and practically no smoke.

' A ring 23 is disposed within the ring 16 and is adjustable vertically by means of an internally threaded collar 24 on the housing 9, which may be rotated by means of a suitable rod 25, which extends to and is operable at the forward outer end of the bed plate 5 of the oil burner. The ring 23 is held in spaced relation to the collar 24 by the pair of posts 23, arranged on-opposite sides of the collar. The threads of the collar 24 have a rather steep pitch, so that the ring 23 is moved throu h acomparatively great distance vertically to adjust the flow of air past the vanes 17 when the collar is rotated through an arc of a circle.

The ring 13 is provided with an annular.

trough 26, which may be drained in any suit-able manner. Extending laterally from the ring 14, and formed integral therewith,

.aretwo oppositely disposed enlarged lugs 2727, which are secured by bolts 28 upon strut-s 29 and 30. These struts are provided with the machined faces 31 and 32 respectively at their lower extremities, which areward edges thereof by means of four bolts 35.-

A plurality of cast iron sectors 36' are secured upon the tops of pillars 37 which are disposed on opposite sides. of the bed plate 5, and are fastened to the floor 38 on its center and is supported at its inner edge;

upon the upturnededges of the trough portion 26 of the ring 13. The sectors 36, to-' gether with the ring 13, form the bed of the firebox 8, andserveto support a circle of fire bricks 40, and a lining of fire clay 41, the upper surface of which is preferably conformed as shown by means of apparatus described and claimed in my co-pending ap plication, Serial No. 411,414, filed Septemher 20th, 1920.

When the firebox bed comprising the ring 13 and the sectors 36 is supported in the manner just described, and as most clearly illustrated in Figures 2 and 3, it has sometimes been found that certain humming sounds are created when the oil burner isoperated. The sounds are created usually by the vibration of the firebox bed in sympathy and synchronously with the bed plate of the oil burner, on which, as above stated,

- the driving means is carried. When the conditions described arise, I have found it very practicable and effective to sup-port the firelower extremities of the struts 29 and 3.0

respectively, lie in planes parallel 'to gthe faces of the struts, but upon a portion slightly offset laterally-from the lower ends thereof. The obj ect in so forming the struts is to cause the machined faces to lie in jux taposition .to the vertical side faces of the bed plate 5 when the firebox bed issupportedas illustrated in Figure3, and so that these faces will assume a position a substantial distance away from the side faces of the bed plate, when the firebox bed is supported independently as shown in Figure 4. In the latter figure, it will be seen that the struts have been interchanged and occupy positions, relative to the bed plate,

reversed from the positions illustrated in Figure When the struts have been so reversed and interchanged, suitable angular blocks 4242 may be provided, which are secured to the floor 38, and with which the bolts 33 co-operate to fasten the lower extremities of the struts securely in position. Any suitable means, as for example jacks, may be used to temporarily support the firebox bed while the struts are reversed and interchanged as just described. I prefer, however, 'to utilize in this connection blocks which can very easily and quickly be put in place and removed.

' Although I have described the details of the preferred embodiment of my invention, I in nowise limit myself to the specific details illustrated, but claim further all adaptations and modifications embraced by the accompanying claims.

Having thus described my invention, what I I desire to claim and secure by Letters Patent is:

1. The combination in an oil burner-- of a bed plate, a rotary spindle mounted for rotating an atomizing nozzle, means mounted upon the bed plate for driving said spindle,

and a structure over said spindle for supporting the bed of a firebox in which said nozzle operates, said structure comprising a ring and means for supporting said ring from said'bed plate or independently thereof, comprising a pair of interchangeable reversible struts.

2. The combination in an oil burner of a bed plate, a rotary spindle-mounted for rotating an atomizing nozzle, means for driving said spindle, and a structure for supporting the bed of a firebox in which said nozzle operates, said'structure comprising a ring and means for supporting said ring from saidbed plateor independently thereof, comprising a pair of interchangeable struts.

. spindle, and a structure for supporting the bed of a firebox in which said nozzle operates, said structure comprising a ring and means for supporting said ring from said bed plate or independently thereof, comprising a pairof reversible struts.

4. An oil burner comprising a bed plate, a rotary spindle for rotating an atomizing nozzle, means secured upon the bed plate for driving the spindle, a firebox over said spindle in which said nozzle operates, and a supporting structure for the bed of said firebox, comprising means capable when placed in one position of supporting the firebox bed from the bed plate, and when placed in the other position of supporting the firebox bed independently of the machine.

5. An oil burner comprising a bed plate, a rotary spindle for rotating an atomizing nozzle, means for driving the spindle, a firebox in which said nozzle operates, and a supporting structure for the bed of said firebox, comprising means capable when placed in one position of supporting the firebox bed from the bed plate, and when placed in the other position of supporting the firebox bed independently of the machine. I

6. The combination in an oil burner mechanism of a bed plate, a rotary spindle for rotating an atomizing nozzle, driving means for said spindle, a firebox in which said.

nozzle operates, and means for supporting the bed of said firebox comprising a pair of interchangeable reversible struts capable of attachment to said bed plate, or when reversed relative to said bed plate and interchanged, to the floor adjacentthe machine and independently thereof.

7. The combination in an oil burner ofa bed plate, a rotary spindle for rotating an atomizing nozzle, driving means for said spindle, a firebox over said spindle in which said nozzle operates, said firebox comprising a ring concentric with said nozzle, an air vane ring thereon, and a plurality of sectors resting on said first mentioned ring adjacent theirinner edges, said ring and sectors together forming a bed to support a fire clay lining for said firebox, means for supporting the firebox bed comprising struts which are reversible and interchangeable and capable of supporting said ring of said firebox bed from the bed plate when placed in one position relatively to each other, and of supporting the same independently of the bed plate when placed in the other position, and a plurality of posts about said ring for supporting said sectors adjacent their outer edges.

In witness whereof, I hereunto subscribe my name this 8th day of February, 1921.

FRANKLIN HARDINGE.

Witnesses:

EDNA V. GUSTAFSON, C. J. Boun'eaors. 

